[email protected]

citation: /^(\@\w\S+\d\d\d\d)/,
t.citation_ext = /^(\@\w\S+\d\d\d\d)/

--> gives first line, errors

strict (not working):
(\@[(A-Za-z)]+_[(A-Za-z)]+_[(0-9)]{4}?) 

!! /^(( ||\[|\()\@\w\S+)( |\.|\]|\))/ (working)

!! /^(( ||\[|\()*?\@\w\S+)( |\.|\]|\))*?/ (also working, no difference)

(( ||\[|\()*\@\w\S+)( |\.|\]|\))*/  (also working, no difference)
((\ |\[|\()*\@\w\S)([^\]\s\.\,\;]*) (working)
(\@\w\S)([^\]\s\.\,\;]*)  not working
(?:^|[ ;\[-])\@\w\S+([^\]\s]*)  : working (captures all between[]s)
(?:^|[ ;\[-])(\@|\u0040|\uFE6B|\uFF20|\u0040)\w\S+([^\]\s]*) : identical

/^\@\w\S*/

/^@[\w]+/

Zettler: \[([^[\]]*@[^[\]]+)\]|(?=[^\\])@([a-z0-9_:.#$%&\-+?<>~/]+) : loops everything eternally

Zotxt: (?:@)[\w:\.#$%&_+?<>~/-]+

From https://github.com/notZaki/PandocCiter/issues/1:

!!! (?:^|[ ;\[-])\@([^\]\s]*)  --> working online + captures citation until before ]
    (?:^|[ ;\[-]*)\@([^\]\s]*) --> working online + captures citation until before ]
    (?:^|[ ;\[-])\@([^\]\s\.\,\;]*) working online + captures citation until before ],;
    (?:^|\s+$|[ ;\[-])\@([^\]\s\.\,\;]*)    : working (identical)
	(?:^|\s|\[)\@([^\]\s\.\,\;]*)           : working
	(?:^|\s|\[|\;)\@([^\]\s\.\,\;]*)        : working
	(?:^|\s|\[)[\@]([^\]\s\.\,\;]*)         : working
	[?:^|\s|\[][\@]([^\]\s\.\,\;]*)         : working
	(^|\s|\[)(\@)([^\]\s\.\,\;]*)           : working
	
	(?:^|[^ ;\[-]*)\@([^\]\s]*)--> not working
	(?:[^\s;.\[-]*)\@([^\]\s]*)--> not working
    \@([^\]\s]*)               --> not working
	(\@)([^\]\s\.\,\;]*)       --> not working
    \@([^\]\s.]*)              --> not working
	
	(?:^|[ ;\[-])\@\w\S+([^\]\s]*)  : working (captures all between[]s)
	(?:^|[ ;\[-])(\@|\u0040|\uFE6B|\uFF20|\u0040)\w\S+([^\]\s]*) : identical


(?<=^|\\s|\\[)(-?@(.*?))(?=$|[\\s\\r\\n\\]{},~#%\\\\'\"=\\(\\)]) : not working
(\\[)(-?@(.*?))(?=$|[\\s\\r\\n\\]{},~#%\\\\'\"=\\(\\)]) : not working
((@)[a-zA-Z]+)\s*(\{)\s*([^\s,]*) : not working

begin: (?<=[\\s\\r\\n\\[])@
end: (?=[\\s\\r\\n\\]])

variations:
(?<=[\\s\\r\\n\\[])\@([^\]\s]*) : not working

(\[@)([a-z]*)([1-9]*) : only captures first word


(\@|\u0040|\uFE6B|\uFF20|\u0040) --> UNICODE version of @